Question

847. 1) (-2 11/13)+(+1 11/13);2) (+3 1/9)+(-5/18);3) (+7/12)+(-5 13/24).​

Answer 1

Ответ:

Пошаговое объяснение:

1) = -2. 11/13 + 1. 11/13 = -1

2) = 3. 1/9 - 5/18 = 3. 2/18 - 5/18 =

2. 20/18 - 5/18 = 2. 15/18 = 2. 3/6

3) = 7/12 - 5. 13/24 = 14/24 - 4. 37/24 =

-4. 23/24

Answer 2

Ответ:

Пошаговое объяснение:

1) (-2 11/13) + (+1 11/13) = -2 11/13 + 1 11/13 = -1

2) (+3 1/9)+ (-5/18) = 3 2/18 - 5/18 = 2 20/18 - 5/18  =2 15/18 = 2 3/6

3) (+7/12) + (-5 13/24) =  14/24 - 4 37/24 = -4 23/24

Answer 3

To solve the given expressions, let's take them one by one and simplify each expression.

1) (-2 + 11/13) + (1 + 11/13)

To solve this expression, we first add the whole numbers and then add the fractions separately.

Adding the whole numbers: (-2 + 1) = -1

Adding the fractions: 11/13 + 11/13 = 22/13

Now, we combine the whole number and the fraction: -1 + 22/13

This is the final result for the first expression.

2) (3 + 1/9) - (5/18)

Similarly, to solve this expression, we first add the whole number and then subtract the fraction.

Adding the whole number: 3

Subtracting the fractions: 1/9 - 5/18

To subtract the fractions, we need to find a common denominator, which is 18. Then, we can proceed with the subtraction: 1/9 = 2/18

Now, we can perform the subtraction: 2/18 - 5/18 = -3/18 = -1/6

So, the final result for the second expression is 3 - 1/6.

3) (7/12) - (5 + 13/24)

For this expression, we first subtract the whole number and then subtract the fractions.

Subtracting the whole number: 7/12 - 5 = -43/12

Subtracting the fractions: -43/12 - 13/24

To subtract the fractions, we need to find a common denominator, which is 24. Then, we can proceed with the subtraction: -43/12 = -86/24

Now, we can perform the subtraction: -86/24 - 13/24 = -99/24 = -4 3/16

So, the final result for the third expression is -4 3/16.

Summary:

1) (-2 + 11/13) + (1 + 11/13) = -1 + 22/13 2) (3 + 1/9) - (5/18) = 3 - 1/6 3) (7/12) - (5 + 13/24) = -4 3/16

These are the simplified results for the given expressions.